Jasmine is a JavaScript testing framework that can be used with JavaScript and CoffeeScript. It provides tools like suites, specs, matchers, spies and mocks to test asynchronous functions. Guard is a tool that can be used to automatically run Jasmine tests when files change. Jasmine-headless-webkit runs Jasmine tests in a headless browser environment. Jasmine-jquery adds jQuery specific matchers, fixtures, and event spies to Jasmine. Jasmine-ajax helps test ajax requests by defining responses and expectations.